Add the flour,baking powder,baking soda,cinnamon powder and salt.Mix gently just until combined. Do not over mix.(The batter will be slightly thick at this stage.)

Gently fold in the grated carrots,zucchini,pineapple and blueberries.

Spoon the batter into the paper cases (fill about 2/3 full)and bake for 18 to 22 minutes or until a skewer inserted into the center of a cupcake comes out clean.Let cool in the pan for 10 minutes,then transfer to a wire rack to cool completely.

Notes

I have used cane sugar instead of granulated sugar.You could also use brown sugar,if desired.